Hi All, For development my setup has two keycloak containers on single VM along with postgres sql. I am following the document mentioned https://github.com/jboss-dockerfiles/keycloak/tree/master/server . I am starting the keycloak and keycloak2 docker containers with docker run -p 8080:8080 --name keycloak --link postgres:postgres -e JGROUPS_DISCOVERY_PROTOCOL=JDBC_PING -e POSTGRES_DATABASE=keycloak -e POSTGRES_USER=keycloak -e POSTGRES_PASSWORD=password -v $HOME/docker/volumes/keycloak:/tmp -d jboss/keycloak docker run -p 8081:8080 --name keycloak2 --link postgres:postgres -e JGROUPS_DISCOVERY_PROTOCOL=JDBC_PING -e POSTGRES_DATABASE=keycloak -e POSTGRES_USER=keycloak -e POSTGRES_PASSWORD=password -v $HOME/docker/volumes/keycloak2:/tmp -d jboss/keycloak In the server logs of both keycloak containers I see below error logs - 19:02:01,596 WARN [org.jboss.as.dependency.private] (MSC service thread 1-1) WFLYSRV0018: Deployment "deployment.keycloak-server.war" is using a private module ("org.kie") which may be changed or removed in future versions without notice. 19:02:02,181 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 60) MSC000001: Failed to start service org.wildfly.clustering.jgroups.channel.ee: org.jboss.msc.service.StartException in service org.wildfly.clustering.jgroups.channel.ee: java.lang.IllegalStateException: java.lang.IllegalArgumentException: Either the 4 configuration properties starting with 'connection_' or the datasource_jndi_name must be set at org.wildfly.clustering.service.FunctionalService.start(FunctionalService.java:70) at org.wildfly.clustering.service.AsyncServiceConfigurator$AsyncService.lambda$start$0(AsyncServiceConfigurator.java:117) at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35) at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377) at java.lang.Thread.run(Thread.java:748) at org.jboss.threads.JBossThread.run(JBossThread.java:485) Caused by: java.lang.IllegalStateException: java.lang.IllegalArgumentException: Either the 4 configuration properties starting with 'connection_' or the datasource_jndi_name must be set at org.jboss.as.clustering.jgroups.subsystem.ChannelServiceConfigurator.get(ChannelServiceConfigurator.java:116) at org.jboss.as.clustering.jgroups.subsystem.ChannelServiceConfigurator.get(ChannelServiceConfigurator.java:58) at org.wildfly.clustering.service.FunctionalService.start(FunctionalService.java:67) ... 7 more Caused by: java.lang.IllegalArgumentException: Either the 4 configuration properties starting with 'connection_' or the datasource_jndi_name must be set at org.jgroups.protocols.JDBC_PING.verifyConfigurationParameters(JDBC_PING.java:421) at org.jgroups.protocols.JDBC_PING.init(JDBC_PING.java:102) at org.jgroups.stack.ProtocolStack.initProtocolStack(ProtocolStack.java:847) at org.jgroups.stack.ProtocolStack.init(ProtocolStack.java:837) at org.jgroups.JChannel.<init>(JChannel.java:200) at org.jboss.as.clustering.jgroups.JChannelFactory.createChannel(JChannelFactory.java:116) at org.jboss.as.clustering.jgroups.subsystem.ChannelServiceConfigurator.get(ChannelServiceConfigurator.java:96) ... 9 more Any hint will be helpful. Thanks, Vijay _______________________________________________ keycloak-user mailing list keycloak-user(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/keycloak-user